10 Pack Indian Rosewood Wood Guitar Classical Back Sets Heartwood of East Indian Rosewood can vary from a golden brown to a deep purplish brown, with darker brown streaks. The wood darkens with age, usually becoming a deep brown. Common Uses: Fine furniture, musical instruments, veneer, turned and other specialty wood objects. Size Classical Backs : 19-1/2" x 6-3/4" / 49.5cm x 17.2cm (2 Pcs) Thickness : 0.16″ or 4 mm